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  • 1
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    From the individual to the community and beyond: water quality, stress indicators and key species in coastal waters (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5304 | 1256 | 2011-09-29 15:07:04 | 5304 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: This review examines water quality and stress indicators at levels of organisation from the individual to the community and beyond by means of three case studies concentrating on rocky shores within the north-east Atlantic. Responses of dogwhelks (Nucella) to tributyltin pollution from antifouling paints is examined as the main case study. There are effects at the individual level (development of male sexual characteristics in the female leading to effective sterility) and population level (reduction in juveniles, few females and eventual population disappearance of dogwhelks in badly contaminated areas) but information on community level effects of dogwhelk demise is sparse. Such effects were simulated by dogwhelk removal experiments on well studied, moderately exposed ledges on shores on the Isle of Man. The removal of dogwhelks reduced the size and longevity of newly established Fucus clumps that had escaped grazing. Removal of dogwhelks also increased the likelihood of algal escapes. In a factorial experiment dogwhelks were shown to be less important than limpets \{Patella) in structuring communities but still had a significant modifying effect by increasing the probability of algal escapes. Community level responses to stress on rocky shores are then explored by reference to catastrophic impacts such as oil spills, using the Torrey Canyon as a case study. Recovery of the system in response to this major perturbation took between 10-15 years through a series of damped oscillations. The final case study is that of indicators of ecosystem level change in response to climate fluctuations, using ratios of northern \{Semibalanus balanoides) and southern (Chthamalus spp.) barnacles. Indices derived from counts on the shore show good correlations with inshore sea-water temperatures after a 2-year lag phase. The use of barnacles to measure offshore changes is reviewed. The discussion considers the use of bioindicators at various levels of organisation.
    Keywords: Ecology ; Oceanography ; Pollution ; Coastal zone ; Water quality ; Biological stress ; Pesticides ; Marine molluscs ; Oil spills ; Algae ; England
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 35-62
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  • 2
    Electronic Resource
    Electronic Resource
    A compressed air drill powered by SCUBA cylinders for use on rocky shores
    Amsterdam : Elsevier
    Estuarine and Coastal Marine Science 9 (1979), S. 819-820 
    Details
    ISSN: 0302-3524
    Keywords: SCUBA diving ; compressed air equipment ; drilling equipment ; rocky shores
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Geography , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0302-3524(79)80015-8
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A study of the small-scale relationship between species number and area on a rocky shore
    Amsterdam : Elsevier
    Estuarine and Coastal Marine Science 10 (1980), S. 201-214 
    Details
    ISSN: 0302-3524
    Keywords: Isle of Man ; Sampling systems ; intertidal environment ; rocky shores ; statistics
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Geography , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0302-3524(80)80058-2
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Explosively generated air presuure waves for structural forcing
    Amsterdam : Elsevier
    Journal of Sound and Vibration 11 (1970), S. 217-224 
    Details
    ISSN: 0022-460X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0022-460X(70)80065-7
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    The hydrography and ecology of a re-developed brackish-water dock
    Amsterdam : Elsevier
    Estuarine, Coastal and Shelf Science 35 (1992), S. 435-452 
    Details
    ISSN: 0272-7714
    Keywords: England coast ; docks ; estuaries ; lagoons ; plankton ; pollution
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Geography , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0272-7714(05)80024-1
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Feast or famine for intertidal grazing molluscs: a mis-match between seasonal variations in grazing intensity and the abundance of microbial resources (2000)
    Springer
    Hydrobiologia 440 (2000), S. 357-367 
    Details
    ISSN: 1573-5117
    Keywords: top-down ; bottom-up ; biofilm ; microphytobenthos ; density dependence ; intra-specific competition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Distinct seasonal variations in the abundance of photosynthetic microbiota and limpet grazing intensity were recorded at Port St Mary, Isle of Man between January 1994 and June 1996. Microbial abundance was negatively correlated with insolation stress, while grazing intensity was positively correlated with sea and air temperature. These patterns result in a mis-match between the supply of and the demand for microbial resources with maximal grazing intensity during the summer and autumn, but maximal microbial standing stock during the winter and early spring. The importance of top-down control of microbial assemblages by grazing was demonstrated by experimental exclusion of limpets during autumn 1993. This resulted in a four-fold increase in the abundance of cyanobacteria within 6 days, followed by a more gradual proliferation of ephemeral algae during the next 4 weeks. The abundance of diatoms remained relatively constant and was not influenced by the removal of grazers at this time of year. The influence of microbial resource availability on the growth and mortality of limpets was examined using experimental enclosures of differing densities of either Patella vulgata or P. depressa. After 6 months, there were significant relationships between grazer density and both mortality and growth with increased mortality and reduced growth for P. vulgata at increased densities, and reduced growth for P. depressa at increased densities. Hence, the availability of microbial resources may also influence the biomass of grazers on rocky shores from the bottom upwards. A conceptual model is presented which describes seasonal and annual variations in microbial resources and grazing intensity and their potential consequences for other shore dwellers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004116505004
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Thoughts on the ecology and evolution of the intertidal biota of the Azores and other Atlantic islands (2000)
    Springer
    Hydrobiologia 440 (2000), S. 3-17 
    Details
    ISSN: 1573-5117
    Keywords: islands ; Macaronesia ; speciation ; ecology ; Patella ; Chthamalus ; intertidal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The special features of the intertidal ecosystems of remote islands are reviewed briefly before focusing on the littoral zone of Macaronesia (Azores, Madeira and Canaries). Distribution patterns are briefly compared with other European shores. Species missing from the Azores compared with Madeira, the Canaries and continental European shores are listed. The degree of genetic differentiation within and amongst selected important species of gastropods (Patella spp.) and barnacles (Chthamalus spp.) in Macaronesia is reviewed. The role of isolated islands in allopatric speciation of these organisms is discussed in relation to dispersal. Possible threats to the populations and communities of rocky shores in Macaronesia are considered in the context of the endemic nature of certain species. The importance of studies of basic ecology and genetics to inform resource management and conservation is highlighted. Future research directions are indicated, emphasizing the usefulness of Macaronesia as a model system to explore speciation in intertidal organisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004118220083
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Impacts of anthropogenic stress on rocky intertidal communities (2000)
    Springer
    Journal of aquatic ecosystem stress and recovery 7 (2000), S. 273-297 
    Details
    ISSN: 1573-5141
    Keywords: anthropogenic stress ; community ; harvesting ; human impact ; introduced species ; pollution ; rocky shore ; siltation ; trampling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rocky shores provide a harsh environment for marine organisms andwe briefly discuss natural sources of variation in community structure beforeconsidering anthropogenic impacts in detail. We review impacts caused by (a) acutedisturbances: oil spills, toxic algal blooms and (b) chronic disturbances: nutrient pollution,oil, heavy metals, pesticides, antifouling paints, collecting, trampling/habitatdegradation, siltation and introduced species. Community level effects are emphasisedthroughout and illustrative examples are drawn from field-based case studies. Particularattention is given to the lessons learned from oil spills and the effect of chronicpollution by tributyltin on dogwhelks, the impacts of which ranged from the biochemical tocommunity levels of organisation. Impacts are placed in a global and historicalperspective and the potential for the recovery of shores under appropriate management isdiscussed. Finally we consider the relative merits of the multivariate and univariateapproaches to studying impacted communities and suggest priorities for future research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009911928100
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    Paper (German National Licenses)
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